/Engine/Plugins/FX/Niagara/Source/Niagara/Public/NiagaraComponent.h
Sets a Niagara float parameter by name, overriding locally if necessary.
[UFUNCTION](Programming/UnrealArchitecture/Reference/Functions)(BlueprintCallable, Category=Niagara, Meta=(DisplayName="Set Niagara Variable (Float)", Keywords="user parameter variable float")) void SetVariableFloat ( [FName](API\Runtime\Core\UObject\FName) InVariableName, float InValue )